==marlin_mini_2014Q4==The marlin_mini_2014Q4.hex firmware is built from https://github.com/alephobjects/marlin_mini and released under GPLv3. ==MarlinUltimaker== The MarlinUltimaker-*.hex firmware is build from https://github.com/Ultimaker/Marlin and released under GPLv3 The sources for the included firmware are taged with the first Cura version number which includes the build. ==MarlinUltimaker2== The MarlinUltimaker2.hex firmware is build from https://github.com/Ultimaker/SecretMarlin and released under GPLv3 The sources for the included firmware are taged with the first Cura version number which includes the build. ==MarlinWitbox== The MarlinWitbox.hex firmware is build from https://github.com/bq/Marlin and released under GPLv3